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9-Pin Accessory
Connector
RS232 Pin Connections
Pin #
Function
1
No connection.
2
TX = Transmitted data
3
RX = Received data
4
No connection
5
GND = Signal ground
6
No connection.
7
CTS = Clear to send
8
RTS = Request to send
9
No connection
Hardware
Internal Connector
Mating Connector
AMP Part# 745491-2
AMP Part# 745492-2
Remote Sensor Connections
Pin #
Function
1
3-wire RTD connection A
2
No connection
3
No connection
4
3-wire RTD connection B
5
No connection
6
No connection.
7
No connection
8
No connection
9
3-wire RTD connection C
Hardware
Internal Connector
Mating Connector
AMP Part# 745491-2
AMP Part# 745492-2
5 4 3 2 1
9 8 7 6
RS-232
5 4 3 2 1
9 8 7 6
The unit is equipped with two female 9-pin D-connectors located on the rear of
the control box. One is used for RS232 communication, the other is used with
an optional remote sensor.
REMOTE
SENSOR
